Most likely people are working on compatible exploits as we speak. I know TeamH2O has one in the works iirc.
But I am truly sorry for the updating. We all have those moments.
If he wasn't using CFW, which it sounds like unless he accidentally updated on sysNAND w/o using A9LH, he cannot follow that solution. Maybe if he had a nand backup someone could solder it for him but highly unlikely.
If he wasn't using CFW, which it sounds like unless he accidentally updated on sysNAND w/o using A9LH, he cannot follow that solution. Maybe if he had a nand backup someone could solder it for him but highly unlikely.